Hi Kengkaj, I suppose you have all the books you need to do very well in exam. Believe me if you study from HF EJB and SCBCD exam study kit. you can definetly get more than 80+ or may be 90+. In my opinion, If you have knowledge of EJB then preparing from SCBCD Exams study kit will be good and you will have no problem in understanding EJB . It is a very good book for preparation. but if you are new to EJB then believe me HF EJB is the best book to start.